<template>
  <view class="content">
    <view class="navbar">
      <view
        v-for="(item, index) in navList"
        :key="index" 
        class="nav-item" 
        :class="{current: tabCurrentIndex === index}"
        @click="tabClick(index)"
      >
        {{ item.text }}
      </view>
    </view>

    <swiper
      :current="tabCurrentIndex"
      class="swiper-box"
      duration="300"
      @change="changeTab"
    >
      <swiper-item
        v-for="(tabItem,tabIndex) in navList"
        :key="tabIndex"
        class="tab-content"
      >
        <scroll-view 
          class="list-scroll-content" 
          scroll-y
          @scrolltolower="loadData"
        >
          <!-- 空白页 -->
          <empty v-if="tabItem.loaded === true && tabItem.orderList.length === 0" />
					
          <!-- 订单列表 -->
          <view 
            v-for="(item,index) in tabItem.orderList"
            :key="index"
            class="order-item"
          >
            <view class="i-top b-b">
              <text class="time">
                NO.{{ item.orderNo }}
              </text>
              <!-- <text class="time">
                {{ item.orderTime }}
              </text> -->
              <text
                class="state"
                :style="{color: item.orderStatus === 4 ? '#333' : ''}"
              >
                {{ item.orderStatus | formatStatus }}
              </text>
            </view>

            <view
              class="goods-box-single"
            >
              <image
                class="goods-img"
                :src="item.orderDetail.goodImg"
                mode="aspectFill"
                @click="navToDetail(item.orderId)"
              />
              <view class="right" @click="navToOrderDetail(item.orderId, item.orderNo, item.orderStatus)">
                <text class="title clamp">
                  {{ item.orderDetail.goodName }}
                </text>
                <view v-if="!item.extraOrder" class="good-detail-info">
                  <text class="attr-box">
                    配送模式：{{ item.orderDetail.deliveryModel | formatDeliveryModel }}
                  </text>
                  <text class="attr-box">
                    配送时间：{{ item.orderDetail.deliveryStart }} 至 {{ item.orderDetail.deliveryEnd }}
                  </text>
                  <text class="attr-box">
                    每日数量：{{ item.orderDetail.avgNumPreDay }}
                  </text>
                  <text class="attr-box">
                    总数量：  {{ item.orderDetail.totalNum }}
                  </text>
                </view>
                <view v-else class="good-detail-info">
                  <text class="attr-box">
                    替换前：{{ item.orderDetail.changeBefore }}
                  </text>
                  <text class="attr-box">
                    替换后：{{ item.orderDetail.changeAfter }}
                  </text>
                  <text class="attr-box">
                    总数量：  {{ item.orderDetail.totalNum }}件
                  </text>
                </view>
              </view>
              <view class="price-box">
                ￥{{ item.orderDetail.totalAmount }}
              </view>
            </view>
            <view
              v-if="item.orderStatus === 1"
              class="action-box b-t"
            >
              <!-- <button
                class="action-btn"
                @click="cancelOrder(item)"
              >
                取消订单
              </button> -->
              <button class="action-btn recom" @click="payOrder(item.orderNo)">
                立即支付
              </button>
            </view>
            <view
              v-if="item.orderStatus === 2"
              class="action-box b-t"
            >
              <button
                type="default"
                class="action-btn recom primary"
                @click="callPhone"
              >
                联系站点
              </button>
            </view>
            <view
              v-if="item.orderStatus === 3"
              class="action-box b-t"
            >
              <button type="default" class="action-btn recom primary">
                立即评价
              </button>
            </view>

          </view>

          <uni-load-more :status="tabItem.loadingType" />
        </scroll-view>
      </swiper-item>
    </swiper>
    <wechat-pay
      ref="wechatPay"
    />
  </view>
</template> 

<script>
import { mapState } from 'vuex'
import uniLoadMore from '@/components/uni-load-more/uni-load-more.vue'
import empty from '@/components/empty'
import wechatPay from '@/components/wechatPay.vue'
export default {
  components: {
    uniLoadMore,
    empty,
    wechatPay
  },
  data() {
    return {
      tabCurrentIndex: 0,
      navList: [{
        orderStatus: 0,
        text: '全部',
        loadingType: 'more',
        orderList: []
      },
      {
        orderStatus: 1,
        text: '待付款',
        loadingType: 'more',
        orderList: []
      },
      {
        orderStatus: 2,
        text: '服务中',
        loadingType: 'more',
        orderList: []
      },
      // {
      //   orderStatus: 3,
      //   text: '待评价',
      //   loadingType: 'more',
      //   orderList: []
      // },
      {
        orderStatus: 4,
        text: '已完成',
        loadingType: 'more',
        orderList: []
      }
      ],
      // 分页
      pageNo: 1,
      pageSize: 10,
      myOrderList: []
    }
  },
  computed: {
    ...mapState(['userInfo']),
  },
	filters: {
    formatStatus(status) {
      switch(status) {
        case 1:
          return '待付款'
        case 2:
          return '服务中'
        case 3:
          return '待评价'
        case 4:
          return '已完成'
      }
    },
  },
  onLoad(options){
    /**
     * 修复app端点击除全部订单外的按钮进入时不加载数据的问题
     * 替换onLoad下代码即可
     */
    this.tabCurrentIndex = this.navList.findIndex(item => +options.state === item.orderStatus)
    this.loadData()
  },

  methods: {
    // 获取订单列表
    async loadData(source) {
      // 这里是将订单挂载到tab列表下
      const index = this.tabCurrentIndex
      const navItem = this.navList[index]
      const orderStatus = navItem.orderStatus
				
      if(source === 'tabChange' && navItem.loaded === true){
        // tab切换只有第一次需要加载数据
        return
      }
      if(navItem.loadingType === 'loading') {
        // 防止重复加载
        return
      }
      if(navItem.loadingType === 'noMore') {
        return
      }
      navItem.loadingType = 'loading'
				
      let orderList = await this.$api.json('getOrders', {
        openId: this.userInfo.openId,
        orderStatus,
        pageNo: this.pageNo,
        pageSize: this.pageSize
      })
      this.myOrderList = orderList
      // orderList = orderList.map(item => {
      //   // 添加不同状态下订单的表现形式
      //   item = Object.assign(item, this.orderStateExp(item.orderStatus))
        // // 演示数据所以自己进行状态筛选
        // if(orderStatus === 0) {
        //   // 0为全部订单
        //   return item
        // }
        // return item.orderStatus === orderStatus
      // })
      
      orderList.forEach(item => {
        navItem.orderList.push(item)
      })
      // loaded新字段用于表示数据加载完毕，如果为空可以显示空白页
      this.$set(navItem, 'loaded', true)
      this.$forceUpdate()
      // 判断是否还有数据， 有改为 more， 没有改为noMore
      navItem.loadingType = orderList.length === 10 ? 'more' : 'noMore'
      if(orderList.length === 10) {
        this.pageNo++
      }
    },

    // swiper 切换
    changeTab(e) {
      this.tabCurrentIndex = e.target.current
      this.loadData('tabChange')
    },
    // 顶部tab点击
    tabClick(index) {
      this.tabCurrentIndex = index
    },
    // 跳转详情页
    navToDetail(id) {
      uni.navigateTo({
        url: '/pages/product/product?id=' + id
      })
    },
    // 跳转订单详情页
    navToOrderDetail(id, orderNo, status) {
      uni.navigateTo({
        url: `/pages/orderDetail/orderDetail?orderId=${id}&orderNo=${orderNo}&status=${status}`
      })
    },
    // 立即支付
    payOrder(orderNo) {
      this.$refs.wechatPay.toggleMask()
      this.$refs.wechatPay.orderNo = orderNo
    },

    // 联系站点
    callPhone() {
      uni.makePhoneCall({
        phoneNumber: '4006188888'
      })
    },
    // 删除订单
    deleteOrder(index){
      uni.showLoading({
        title: '请稍后'
      })
      setTimeout(() => {
        this.navList[this.tabCurrentIndex].orderList.splice(index, 1)
        uni.hideLoading()
      }, 600)
    },
    // 取消订单
    cancelOrder(item){
      uni.showLoading({
        title: '请稍后'
      })
      setTimeout(() => {
        const { stateTip, stateTipColor } = this.orderStateExp(9)
        item = Object.assign(item, {
          state: 9,
          stateTip, 
          stateTipColor
        })
					
        // 取消订单后删除待付款中该项
        const list = this.navList[1].orderList
        const index = list.findIndex(val => val.id === item.id)
        index !== -1 && list.splice(index, 1)
					
        uni.hideLoading()
      }, 600)
    },

    // 订单状态文字和颜色
    orderStateExp(state){
      let stateTip = '';
      let stateTipColor = '#fa436a'
      switch(+state){
      case 1:
        stateTip = '待付款'; break
      case 2:
        stateTip = '待发货'; break
      case 9:
        stateTip = '订单已关闭' 
        stateTipColor = '#909399'
        break
						
					// 更多自定义
      }
      return { stateTip, stateTipColor }
    }
  },
}
</script>

<style lang="scss">
	page, .content{
		background: $page-color-base;
		height: 100%;
	}
	
	.swiper-box{
		height: calc(100% - 40px);
	}
	.list-scroll-content{
		height: 100%;
	}
	
	.navbar{
		display: flex;
		height: 40px;
		padding: 0 5px;
		background: #fff;
		box-shadow: 0 1px 5px rgba(0,0,0,.06);
		position: relative;
		z-index: 10;
		.nav-item{
			flex: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			font-size: 15px;
			color: $font-color-dark;
			position: relative;
			&.current{
				color: $base-color;
				&:after{
					content: '';
					position: absolute;
					left: 50%;
					bottom: 0;
					transform: translateX(-50%);
					width: 44px;
					height: 0;
					border-bottom: 2px solid $base-color;
				}
			}
		}
	}

	.uni-swiper-item{
		height: auto;
	}
	.order-item{
		display: flex;
		flex-direction: column;
		padding-left: 30rpx;
		background: #fff;
		margin-top: 16rpx;
		.i-top{
			display: flex;
			align-items: center;
			height: 80rpx;
			padding-right:30rpx;
			font-size: $font-base;
			color: $font-color-dark;
			position: relative;
			.time{
				flex: 1;
			}
			.state{
				color: $base-color;
			}
			.del-btn{
				padding: 10rpx 0 10rpx 36rpx;
				font-size: $font-lg;
				color: $font-color-light;
				position: relative;
				&:after{
					content: '';
					width: 0;
					height: 30rpx;
					border-left: 1px solid $border-color-dark;
					position: absolute;
					left: 20rpx;
					top: 50%;
					transform: translateY(-50%);
				}
			}
		}
		/* 多条商品 */
		.goods-box{
			height: 160rpx;
			padding: 20rpx 0;
			white-space: nowrap;
			.goods-item{
				width: 120rpx;
				height: 120rpx;
				display: inline-block;
				margin-right: 24rpx;
			}
			.goods-img{
				display: block;
				width: 100%;
				height: 100%;
			}
		}
		/* 单条商品 */
		.goods-box-single{
			display: flex;
      padding: 20rpx 0;
      align-items: center;
      position: relative;
			.goods-img{
				display: block;
				width: 120rpx;
				height: 120rpx;
      }
      .good-detail-info {
        display: flex;
        flex-direction: column;

      }
			.right{
				flex: 1;
				display: flex;
				flex-direction: column;
				padding: 0 30rpx 0 24rpx;
        overflow: hidden;
				.title{
					font-size: $font-base + 2rpx;
					color: $font-color-dark;
          margin-bottom: 10rpx;
				}
				.attr-box{
					font-size: $font-sm;
					color: $font-color-light;
					padding: 2rpx 0;
				}
			}
		}
		
		.price-box{
			display: flex;
			justify-content: flex-end;
      align-items: baseline;
      position: absolute;
      bottom: 20rpx;
      right: 20rpx;
			padding: 0 30rpx;
			font-size: $font-sm + 2rpx;
			color: $font-color-dark;
		}
		.action-box {
			display: flex;
			justify-content: flex-end;
			align-items: center;
			height: 100rpx;
			position: relative;
			padding-right: 30rpx;
		}
		.action-btn {
			width: 160rpx;
			height: 60rpx;
			margin: 0;
			margin-left: 24rpx;
			padding: 0;
			text-align: center;
			line-height: 60rpx;
			font-size: $font-sm + 2rpx;
			color: $font-color-dark;
			background: #fff;
			border-radius: 100px;
			&:after {
				border-radius: 100px;
			}
			&.recom {
				background: #fff9f9;
				color: $base-color;
				&:after{
					border-color: $base-color;
				}
      }
      &.primary {
        color: $font-color-dark;
        background-color: #fff;
        &:after{
					border-color: $font-color-dark;
				}
      }
    }
	}
	
	
	/* load-more */
	.uni-load-more {
		display: flex;
		flex-direction: row;
		height: 80rpx;
		align-items: center;
		justify-content: center
	}
	
	.uni-load-more__text {
		font-size: 28rpx;
		color: #999
	}
	
	.uni-load-more__img {
		height: 24px;
		width: 24px;
		margin-right: 10px
	}
	
	.uni-load-more__img>view {
		position: absolute
	}
	
	.uni-load-more__img>view view {
		width: 6px;
		height: 2px;
		border-top-left-radius: 1px;
		border-bottom-left-radius: 1px;
		background: #999;
		position: absolute;
		opacity: .2;
		transform-origin: 50%;
		animation: load 1.56s ease infinite
	}
	
	.uni-load-more__img>view view:nth-child(1) {
		transform: rotate(90deg);
		top: 2px;
		left: 9px
	}
	
	.uni-load-more__img>view view:nth-child(2) {
		transform: rotate(180deg);
		top: 11px;
		right: 0
	}
	
	.uni-load-more__img>view view:nth-child(3) {
		transform: rotate(270deg);
		bottom: 2px;
		left: 9px
	}
	
	.uni-load-more__img>view view:nth-child(4) {
		top: 11px;
		left: 0
	}
	
	.load1,
	.load2,
	.load3 {
		height: 24px;
		width: 24px
	}
	
	.load2 {
		transform: rotate(30deg)
	}
	
	.load3 {
		transform: rotate(60deg)
	}
	
	.load1 view:nth-child(1) {
		animation-delay: 0s
	}
	
	.load2 view:nth-child(1) {
		animation-delay: .13s
	}
	
	.load3 view:nth-child(1) {
		animation-delay: .26s
	}
	
	.load1 view:nth-child(2) {
		animation-delay: .39s
	}
	
	.load2 view:nth-child(2) {
		animation-delay: .52s
	}
	
	.load3 view:nth-child(2) {
		animation-delay: .65s
	}
	
	.load1 view:nth-child(3) {
		animation-delay: .78s
	}
	
	.load2 view:nth-child(3) {
		animation-delay: .91s
	}
	
	.load3 view:nth-child(3) {
		animation-delay: 1.04s
	}
	
	.load1 view:nth-child(4) {
		animation-delay: 1.17s
	}
	
	.load2 view:nth-child(4) {
		animation-delay: 1.3s
	}
	
	.load3 view:nth-child(4) {
		animation-delay: 1.43s
	}
	@keyframes load {
    0% {
			opacity: 1
		}
	
		100% {
			opacity: .2
		}
  }
	@-webkit-keyframes load {
		0% {
			opacity: 1
		}
	
		100% {
			opacity: .2
		}
	}
</style>
